linux-kernel - [PATCH 1/2] tlb: export tlb_flush_mmu

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Message-ID: <20161128083931.GB21738@aaronlu.sh.intel.com>
Date:   Mon, 28 Nov 2016 16:39:31 +0800
From:   Aaron Lu <aaron.lu@...el.com>
To:     Linus Torvalds <torvalds@...ux-foundation.org>
Cc:     Linux Memory Management List <linux-mm@...ck.org>,
        Dave Hansen <dave.hansen@...el.com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        "Kirill A. Shutemov" <kirill.shutemov@...ux.intel.com>,
        Huang Ying <ying.huang@...el.com>, linux-kernel@...r.kernel.org
Subject: [PATCH 1/2] tlb: export tlb_flush_mmu_tlbonly

The mmu gather logic for tlb flush will be used in mremap case so export
this function.

Signed-off-by: Aaron Lu <aaron.lu@...el.com>
---
 include/asm-generic/tlb.h | 1 +
 mm/memory.c               | 2 +-
 2 files changed, 2 insertions(+), 1 deletion(-)

diff --git a/include/asm-generic/tlb.h b/include/asm-generic/tlb.h
index c6d667187608..0f1861db935c 100644
--- a/include/asm-generic/tlb.h
+++ b/include/asm-generic/tlb.h
@@ -119,6 +119,7 @@ struct mmu_gather {
 
 void tlb_gather_mmu(struct mmu_gather *tlb, struct mm_struct *mm, unsigned long start, unsigned long end);
 void tlb_flush_mmu(struct mmu_gather *tlb);
+void tlb_flush_mmu_tlbonly(struct mmu_gather *tlb);
 void tlb_finish_mmu(struct mmu_gather *tlb, unsigned long start,
 							unsigned long end);
 extern bool __tlb_remove_page_size(struct mmu_gather *tlb, struct page *page,
diff --git a/mm/memory.c b/mm/memory.c
index e18c57bdc75c..130d82f7d8a2 100644
--- a/mm/memory.c
+++ b/mm/memory.c
@@ -238,7 +238,7 @@ void tlb_gather_mmu(struct mmu_gather *tlb, struct mm_struct *mm, unsigned long
 	__tlb_reset_range(tlb);
 }
 
-static void tlb_flush_mmu_tlbonly(struct mmu_gather *tlb)
+void tlb_flush_mmu_tlbonly(struct mmu_gather *tlb)
 {
 	if (!tlb->end)
 		return;
-- 
2.5.5